$2.20\cdot15$

$\frac{d}{dx}\left(x+1\right)^{x-1}$

$\left(2x^{\frac{1}{2}}-3y^{\frac{1}{2}}\right)\left(3y^{\frac{1}{2}}-2x^{\frac{1}{2}}\right)$

$\int\left(\frac{1}{z\left(25-z^2\right)}\right)dz$

$8+3x\ge2x$

$4m^3y+5x^2my-7x^2m^2y^2$

$\cos\left(x\right)\left(\tan x+\cos x\right)=1+\sin x-\sin^2x$